O'Reilly logo

Getting Started with RFID by Tom Igoe

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 4. RFID Meets Home Automation

Between my officemate and me, we have dozens of devices drawing power in our office: two laptops, two monitors, four or five lamps, a few hard drives, a soldering iron, Ethernet hubs, speakers, and so forth. Even when we’re not here, the room is drawing a lot of power. What devices are turned on at any given time depends largely on which of us is here, and what we’re doing. This project is a system to reduce our power consumption, particularly when we’re not there.

When either of us comes into the room, all we have to do is tap our key fobs on a reader mounted by the door, and the room turns on or off what we normally use. Each of us has a keyring with an RFID-tag key fob. The reader by the door reads the presence ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required